[Mr Allan Brittan]

Thank you Robin

[Mr Allan Brittan]

Hi Hugh,

i did wonder about high cloud wafting through which I didn’t see, I also wondered if I used to long an exposure. Next clear skies I’ll try both stars again with different length exposures.

Kate

[Mr Allan Brittan]

if I’m looking at the right thing, all the ones on the two not so noisy spectra are the same, whereas there is a difference between the subs for alpha cyg and alpha peg.

The weather has defeated me for tonight, hopefully will get a cleat patch next week to try them again.

Thanks Andrew and Robin.

Kate

[Mr Allan Brittan]

Thanks for the suggestions. Guiding was doing well as I was watching it, seeing was good when I imaged these two and Im sure they were the right stars as I used sync before moving on to next target. I did wonder about trees so checked height and tree tops but they appeared clear.

i use an Atik camera controlled by Artemis, the telescope runs with Cartes du ciel with a costar for guiding in phd2.

if we get clear skies I’ll try again tonight

kate

[Mr Allan Brittan]

Thank you both.

Kate

[Mr Allan Brittan]

Thank you for explaining why the topic disappeared.

[Mr Allan Brittan]

Is this software available to anyone or is it still being tested?

kate

[Mr Allan Brittan]

Thanks Robin

[Mr Allan Brittan]

Hi David and Robin,

i set the smile using a neon light source.

kate

[Mr Allan Brittan]

Hi Robin,

These are my numbers from the last run through

Wavelength fit deviation
point #1  x = 706.025  lambda = 3839.683  dlambda = -4.293
point #2  x = 724.012  lambda = 3879.507  dlambda = 9.543
point #3  x = 767.819  lambda = 3979.946  dlambda = -9.866
point #4  x = 816.480  lambda = 4096.430  dlambda = 5.320
point #5  x = 913.897  lambda = 4341.149  dlambda = -0.669
point #6  x = 1111.911  lambda = 4861.383  dlambda = -0.043
point #7  x = 1782.002  lambda = 6562.789  dlambda = 0.021
point #8  x = 1898.594  lambda = 6872.013  dlambda = -0.013
————————————————————————–
Coefficient a4 : 7.007126E-10
Coefficient a3 : -3.752157E-06
Coefficient a2 : 7.268176E-03
Coefficient a1 : -3.45201
Coefficient a0 : 3798.122
————————————————————————–
RMS : 8.861652

Kate

[Mr Allan Brittan]

hi Andy and Robin,

i did the calculations and came up with p=4.66.

I tried this and got an RMS of 22.118.

I repeated it with 4.69 and got an RMS of 8.86, so will stick with that figure for now.

Thanks  for the help

Kate

[Mr Allan Brittan]

i am using an alpy without calibration module. Star is delta cas. I have now got things closer by changing my pixel value slightly.

Great guide Paul.

kate

[Mr Allan Brittan]

Thank you all.

I never realised taking flats could be so confusing, but I have a pillow case and will find a Halogen light to use.

Kate

[Mr Allan Brittan]

Does it need to be a halogen light or is there other options?

kate

[Mr Allan Brittan]

Hi Robin,

I tested mine over the weekend and got a similar looking curve to yours.

will have to try another method for flats.

kate

[Mr Allan Brittan]

Thank you Nick and Robin. At present I can’t afford the section for the alpy which does flats or the calibration module, so I’m trying to see if what I have will work.i will test the panel and also other methods and see which I can achieve the best results with. it would be interesting to see what results you get Robin.

kate

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